UI10/11 high pins attached. UI11 has some interesting readings for you - UI11 pins 11/12 kept jumping up the screen; I managed to capture one of the moments when it did so. Pins 13/14 don't look so good either.
I will go look at the 4108s now.
https://drive.google.com/file/d/10m_...ew?usp=sharing
Colin.
Quote:
Originally Posted by SiriusHardware
I have to be honest, nothing is really jumping out at me there.
Can you try scoping the BD0... BD7 lines, you can find them on the first of each of these pairs of connected pins.
UI10 pins 11-12
UI10 pins 13-14
UI10 pins 15-16
UI10 pins 17-18
UI11 pins 11-12
UI11 pins 13-14
UI11 pins 15-16
UI11 pins 17-18
Also scope Pin 3 of each of the 4108s and pins 4 and 15 of each 4108 as well. No need to post those results, just confirm that all of them have activity on them with proper high / low logic levels.
|